JP7020079B2 - Lighting equipment and lighting equipment - Google Patents

Description

The present invention relates to a lighting device and a luminaire.

Patent Document 1 discloses a power supply voltage-free discharge lamp lighting device to which a wide range of AC voltage from 100 V to 254 V is input. In this discharge lamp lighting device, it is possible to suppress an increase in power consumption even if the voltage value of the input AC voltage becomes high.

Japanese Unexamined Patent Publication No. 2008-61309

For lighting fixtures installed in office buildings, factories, etc., the input voltage may differ depending on the circumstances of the installation destination. Therefore, a lighting fixture called power supply voltage free that can be lit in the range of AC100V to AC254V as an input voltage may be used. A lighting fixture free of power supply voltage is made possible by controlling the power supplied to the lighting load to be constant regardless of the input voltage in the internal lighting device.

Generally, in office buildings and the like, it is often the case that both AC100V and AC200V are supplied to each tenant by a single-phase three-wire system. In this case, either AC100V or AC200V is selected and used for the lighting equipment free of power supply voltage. Generally, AC200V is often used. It is assumed that the operator intends to wire the luminaire so that the input voltage to the luminaire is AC200V, but the input voltage is erroneously set to AC100V. This occurs when the wiring is grounded in the middle due to pinching of the wiring or the like. At this time, the luminaire lights normally even with an input voltage of AC100V due to incorrect wiring. Therefore, the operator may not notice the incorrect wiring.

Further, in order to grasp the input voltage to the luminaire after the luminaire is installed, a measuring device such as a tester is generally required. Therefore, it may take time and effort to grasp the input voltage.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to obtain a lighting device and a lighting fixture that can easily grasp an input voltage.

The lighting device according to the present disclosure includes a lighting circuit to which an input voltage is supplied from an external power source which is a commercial AC power source to light a light source, a control circuit to control the lighting circuit, and a voltage detection circuit to detect the input voltage. , The control circuit determines the magnitude of the input voltage from the detection voltage of the voltage detection circuit in response to a signal from the external device, and outputs the determination result to the notification unit . The control circuit supplies one voltage and a second voltage, and the control circuit has an input voltage of the first voltage, the second voltage, the first voltage, and a voltage other than the second voltage. Is determined .
The lighting device according to the present disclosure includes a lighting circuit to which an input voltage is supplied from an external power source to light a light source, a control circuit for controlling the lighting circuit, and a voltage detection circuit for detecting the input voltage. The control circuit determines the magnitude of the input voltage from the detection voltage of the voltage detection circuit in response to a signal from the external device, outputs the determination result to the notification unit, and the external device outputs the external power supply and the lighting. It is a switch that connects to the circuit, and the control circuit detects the interruption of the input voltage by the pullless operation that turns the switch on and off within a certain period from the detected voltage of the voltage detection circuit, and detects the pullless operation. Then, the magnitude of the input voltage is determined, and the determination result is output to the notification unit.
The lighting device according to the present disclosure connects a lighting circuit to which an input voltage is supplied from an external power source to light a light source, a control circuit for controlling the lighting circuit, a voltage detection circuit for detecting the input voltage, and an external device. The control circuit determines the magnitude of the input voltage from the detection voltage of the voltage detection circuit in response to a signal from the external device, outputs the determination result to the notification unit, and outputs the determination result to the notification unit. The external device is a confirmation unit that communicates with the control circuit via the expansion terminal, and the control circuit determines whether or not the confirmation unit is connected to the expansion terminal, and the confirmation unit is connected to the expansion terminal. When the unit is connected, the magnitude of the input voltage is determined, and the determination result is output to the notification unit.

In the lighting device according to the present invention, the control circuit determines the magnitude of the input voltage according to the signal from the external device, and outputs the determination result to the notification unit. Therefore, the operator can easily grasp the input voltage.

It is a circuit block diagram of the lighting fixture which concerns on Embodiment 1. FIG. It is a figure which shows another connection method of an external power source and an input terminal. It is a flowchart which shows the operation of the control circuit which concerns on Embodiment 1. FIG. It is a flowchart which shows the operation of the mode switching part which concerns on Embodiment 1. It is a flowchart which shows the operation of the voltage determination part which concerns on Embodiment 1. It is a circuit block diagram of the lighting fixture which concerns on Embodiment 2. FIG. It is a flowchart which shows the operation of the control circuit which concerns on Embodiment 2.

A lighting device, a lighting device, and a lighting fixture according to an embodiment of the present invention will be described with reference to the drawings. The same or corresponding components may be designated by the same reference numerals and the description may be omitted.

Embodiment 1.
FIG. 1 is a circuit block diagram of the lighting fixture 1 according to the first embodiment. The luminaire 1 includes an input terminal 3, a lighting device 10, and a light source 4.

The lighting fixture 1 is supplied with an input voltage Vi from an external power source. The external power supply is a single-phase three-wire power supply that is a commercial power supply. The external power supply includes two power supply ACs connected in series. The voltage of each power supply AC is AC100V. A neutral point N for grounding is provided at the connection point of the two power ACs. The external power supply supplies a first voltage and a second voltage. The first voltage is AC100V and the second voltage is AC200V.

The input terminal 3 of the lighting fixture 1 includes a high potential side terminal 3a and a low potential side terminal 3b. Two power supply ACs are connected between the high potential side terminal 3a and the low potential side terminal 3b. Therefore, AC200V is applied to the input terminal 3 of the lighting fixture 1. The outer shell of the luminaire 1 is connected to the grounding terminal and has an equipotential potential with the neutral point N.

The external power supply and the luminaire 1 are connected by the switch SW2. It is desirable that the switch SW2 is a double-sided power switch. The switch SW2 is, for example, a wall switch. The switch SW2 may be a switch installed in the room. The switch SW2 includes a switch La and a switch Lb. The switch La connects the high potential side terminal 3a and the external power supply. The switch Lb connects the low potential side terminal 3b and the external power supply. The voltage between the switch La and the neutral point N and between the neutral point N and the switch Lb is AC100V, respectively.

The light source 4 includes a plurality of LEDs 4a connected in series. The light source 4 is a lighting load. Although two LEDs 4a are shown in FIG. 1, the number of LEDs 4a included in the light source 4 may be other than this. Further, the plurality of LEDs 4a may be connected in parallel or in series / parallel.

The lighting device 10 has an input terminal 13 and an output terminal 16. The input terminal 13 is connected to the input terminal 3. The output terminal 16 is connected to the light source 4. In the lighting device 10, the rectifier circuit 11 is connected to the input terminal 13. The rectifier circuit 11 rectifies the AC voltage input from the external power supply via the input terminal 13. The rectifier circuit 11 is a bridge rectifier circuit or the like. The rectifier circuit 11 may include a circuit that generates a DC voltage, such as a step-up chopper circuit.

A voltage detection circuit 12 is connected to the output of the rectifier circuit 11. The voltage detection circuit 12 detects the input voltage Vi from the external power supply to the lighting device 10. The input voltage Vi is a voltage applied to the input terminal 3 or the input terminal 13. The voltage detection circuit 12 includes resistors 12a and 12b connected in series. One end of the series circuit of the resistors 12a and 12b is connected to the output on the high potential side of the rectifier circuit 11, and the other end is connected to the output on the low potential side of the rectifier circuit 11. The connection point between the resistance 12a and the resistance 12b is connected to the control circuit 17. The detection voltage Vp, which is the voltage at the connection point of the resistors 12a and 12b, is input to the control circuit 17. The voltage detection circuit 12 is a voltage divider circuit in which the voltage obtained by rectifying the input voltage Vi is divided by the resistors 12a and 12b.

A lighting circuit 15 is connected to the voltage detection circuit 12 on the opposite side of the rectifier circuit 11. The lighting circuit 15 is supplied with an input voltage Vi from an external power source to light the light source 4. The lighting circuit 15 includes a switching element 15a, a diode 15b, a coil 15c, and a capacitor 15d. The drain of the switching element 15a is connected to the output on the high potential side of the rectifier circuit 11. The source of the switching element 15a is connected to the cathode of the diode 15b and one end of the coil 15c. The gate of the switching element 15a is connected to the switching element drive driver 14.

The anode of the diode 15b is connected to the output on the low potential side of the rectifier circuit 11. The other end of the coil 15c is connected to the positive electrode of the capacitor 15d. The negative electrode of the capacitor 15d is connected to the output on the low potential side of the rectifier circuit 11. The output voltage of the lighting circuit 15 is applied to both ends of the capacitor 15d. The output voltage of the lighting circuit 15 is supplied to the light source 4 via the output terminal 16.

The lighting circuit 15 lights the light source 4 when the input voltage Vi is in the range of AC100V to AC254V. The lighting circuit 15 lights the light source 4 regardless of whether the input voltage Vi is the first voltage or the second voltage. The lighting circuit 15 is free of power supply voltage. Not limited to this, the lighting circuit 15 may have an input voltage Vi range of AC100V to AC200V. In the present embodiment, the lighting circuit 15 is a step-down converter circuit.

The lighting device 10 includes a detection resistor Rd. The detection resistor Rd is connected between the low potential side of the output terminal 16 and the negative electrode of the capacitor 15d. A voltage Vr corresponding to the light source current flowing through the light source 4 is applied to the detection resistor Rd. The voltage Vr is input to the control circuit 17.

The lighting device 10 includes a control circuit 17 that controls the lighting circuit 15. The control circuit 17 is, for example, a microcomputer. The control circuit 17 outputs a dimming signal Vu for switching the switching element 15a. Generally, the voltage of the dimming signal Vu is smaller than the drive voltage of the switching element 15a. Therefore, the dimming signal Vu is input to the switching element drive driver 14, and the switching element 15a is switched via the switching element drive driver 14.

The operation mode of the control circuit 17 includes a steady operation mode and a voltage determination mode. The control circuit 17 has a mode switching unit 17a. The mode switching unit 17a switches the state of the control circuit 17 between the steady operation mode and the voltage determination mode according to the signal from the external device. The mode switching unit 17a is a mode switching switch that switches the operation mode of the control circuit 17 according to a signal from an external device.

In this embodiment, the external device is the switch SW2. The mode switching unit 17a detects the interruption and discontinuity of the input voltage Vi due to the pullless operation from the detection voltage Vp of the voltage detection circuit 12. Here, the pullless operation is an operation of turning on / off the switch SW2 within a certain period as described later. When the mode switching unit 17a detects the pullless operation, the mode switching unit 17a sets the state of the control circuit 17 to the voltage determination mode.

Further, the control circuit 17 has a dimming signal output unit 17b. The dimming signal output unit 17b outputs a dimming signal Vu to the lighting circuit 15 so that the dimming rate of the light source 4 matches the target value when the control circuit 17 is in the steady operation mode.

Further, the control circuit 17 has a voltage determination unit 17c. The voltage determination unit 17c determines the magnitude of the input voltage Vi from the external power supply from the detection voltage Vp of the voltage detection circuit 12 when the control circuit 17 is in the voltage determination mode. The voltage determination unit 17c determines whether the input voltage Vi is the first voltage or the second voltage. The voltage determination unit 17c includes, for example, a comparator that compares the input voltage Vi with the first voltage and the second voltage.

The mode switching unit 17a stops the voltage determination unit 17c when the control circuit 17 is in the steady operation mode, and activates the voltage determination unit 17c when the control circuit 17 is in the voltage determination mode. That is, when the mode switching unit 17a detects the pullless operation within a certain period of time, the mode switching unit 17a transmits the pullless operation determination signal to the voltage determination unit 17c. As a result, the voltage determination unit 17c is activated.

The voltage determination unit 17c outputs the determination result of the input voltage Vi to the notification unit. The notification unit notifies the operator of the determination result. In the present embodiment, the notification unit includes a light source 4.

FIG. 2 is a diagram showing another connection method between the external power supply and the input terminal 3. In this way, there are cases where construction work is performed in which AC100V is applied to the input terminal 3 with a single-phase two-wire system.

Next, the operation of the lighting fixture 1 will be described with reference to FIGS. 3 to 5. FIG. 3 is a flowchart showing the operation of the control circuit 17 according to the first embodiment. First, the switch SW2 is turned on to start supplying power to the luminaire 1. When the power is turned on, the input voltage Vi of AC200V is supplied to the luminaire 1 from the input terminal 3.

The rectifier circuit 11 smoothes the input voltage Vi after full-wave rectification. As a result, the input voltage Vi is converted into direct current. A part of this DC voltage is divided and supplied to the control circuit 17 as a control power supply Vdd. When the control power supply Vdd is energized to the control circuit 17, the control circuit 17 is initialized as shown in step S1. When the control circuit 17 is initialized, it is set to the steady operation mode as shown in step S2. In the steady operation mode, as shown in step S3, the control circuit 17 normally turns on the light source 4.

Next, in step S3, the operation of the control circuit 17 that normally lights the light source 4 in the steady operation mode will be described. The control circuit 17 outputs a dimming signal Vu and controls the lighting circuit 15. The dimming signal Vu is a DC signal that turns on and off the switching element 15a by a High signal and a Low signal. The High time of the dimming signal Vu corresponds to the on time of the switching element 15a.

The dimming signal output unit 17b detects the light source current from the voltage Vr. The light source current corresponds to the dimming rate. The dimming signal output unit 17b outputs the dimming signal Vu so that the light source 4 is turned on with a preset brightness based on the voltage Vr. For example, if the target value of the dimming rate is 80%, the dimming signal output unit 17b outputs the dimming signal Vu so that the dimming rate is 80%. When the dimming rate is lower than the target value, the dimming signal output unit 17b lengthens the High time of the dimming signal Vu. Further, the higher the input voltage Vi, the shorter the High time of the dimming signal Vu.

From the above, by adjusting the on-time of the switching element 15a, the constant current is controlled so that the current supplied from the lighting circuit 15 to the light source 4 becomes constant regardless of the magnitude of the input voltage Vi. The control circuit 17 may capture a PWM signal or a signal transmitted by digital communication from the outside of the lighting device 10. In this case, the control circuit 17 may output a dimming signal Vu according to the duty ratio of the signal input from the outside.

During normal lighting, the mode switching unit 17a detects the presence or absence of a pullless operation as shown in step S4. FIG. 4 is a flowchart showing the operation of the mode switching unit 17a according to the first embodiment. The pullless operation is an operation in which the input voltage Vi is interrupted in a short time. The pullless operation in the present embodiment refers to switching the switch SW2 on, off, and on within, for example, 3 seconds.

The mode switching unit 17a takes in the detection voltage Vp of the voltage detection circuit 12 and determines whether or not there is a pullless operation. The mode switching unit 17a A / D-converts the detected voltage Vp. As a result, the mode switching unit 17a detects the detection voltage Vp, which is the DC voltage corresponding to the input voltage Vi. For example, when AC254V is input to the input terminal 13, the detection voltage Vp = 15V. When AC200V is input to the input terminal 13, the detection voltage Vp = 11.8V. When AC100V is input to the input terminal 13, the detection voltage Vp = 5.9V. The resistance values of the resistors 12a and 12b are set so that the detected voltage Vp becomes the above-mentioned value with respect to the input voltage Vi.

The mode switching unit 17a reads the A / D conversion value of the detected voltage Vp at regular sampling times. The sampling time is, for example, 10 ms. Here, when the input voltage Vi is interrupted by the pullless operation, the A / D conversion value is switched between the Low signal and the High signal with the passage of time. Here, the Low signal is 0V. Further, the interruption of the input voltage Vi means that the power is turned off from the state where the power is turned on, and then the power is turned on again immediately after that. At this time, the value read by the mode switching unit 17a is switched in the order of High signal, Low signal, and High signal.

As shown in step S21, it is assumed that the mode switching unit 17a detects a fall from the High signal to the Low signal due to the change of the input voltage Vi from on to off. At this time, as shown in step S22, the mode switching unit 17a activates the pullless timer. As shown in step S25, the pullless timer counts the determination time. The determination time is, for example, 3 seconds.

Next, as shown in step S23, it is assumed that the mode switching unit 17a detects a rise from the Low signal to the High signal, which is a change when the power is turned on, while the pullless timer is running. When the mode switching unit 17a detects that the power is turned on again during the determination time, it determines that there is a pullless operation as shown in step S24. When the mode switching unit 17a determines that there is a pullless operation, the state of the control circuit 17 transitions from the steady operation mode to the voltage determination mode as shown in step S5 of FIG.

If the rise is not detected even after the determination time has elapsed after the pullless timer is started, the mode switching unit 17a stops the pullless timer as shown in step S26. At this time, as shown in step S2 of FIG. 3, the mode switching unit 17a sets the control circuit 17 to the steady operation mode.

Next, the voltage determination mode will be described. In the voltage determination mode, the voltage determination unit 17c is activated. As shown in step S6, the voltage determination unit 17c determines the magnitude of the input voltage Vi based on the A / D conversion value of the detected voltage Vp.

FIG. 5 is a flowchart showing the operation of the voltage determination unit 17c according to the first embodiment. As shown in steps S31 to S34, the voltage determination unit 17c compares the A / D conversion value with the four threshold values. The four threshold values are stored in the voltage determination unit 17c in advance. Thereby, it is determined which of the three types of the input voltage Vi is AC200V, AC100V and other voltages.

Considering the voltage fluctuation of the commercial power supply, the threshold value when determining the input voltage Vi of AC200V is the A / D conversion value corresponding to Vp = 11.8V ± 10%, and when determining the input voltage Vi of AC100V. The threshold value of is set to the A / D conversion value corresponding to Vp = 5.9V ± 10%.

First, as shown in step S31, the voltage determination unit 17c determines whether the input voltage Vi is AC200V + 10% or less. When the input voltage Vi is larger than AC200V + 10%, it is determined that the input voltage Vi is a voltage other than AC200V and AC100V. When the input voltage Vi is AC200V + 10% or less, as shown in step S32, the voltage determination unit 17c determines whether the input voltage Vi is AC200V-10% or more. When the input voltage Vi is AC200V-10% or more, it is determined that the input voltage Vi is AC200V.

When the input voltage Vi is smaller than AC200V-10%, as shown in step S33, the voltage determination unit 17c determines whether the input voltage Vi is AC100V + 10% or less. When the input voltage Vi is larger than AC100V + 10%, it is determined that the input voltage Vi is a voltage other than AC200V and AC100V. When the input voltage Vi is AC100V + 10% or less, as shown in step S34, the voltage determination unit 17c determines whether the input voltage Vi is AC100V-10% or more. When the input voltage Vi is AC100V-10% or more, it is determined that the input voltage Vi is AC100V. When the input voltage Vi is smaller than AC100V-10%, it is determined that the input voltage Vi is a voltage other than AC200V and AC100V.

The voltage value of the commercial power supply may fluctuate. Therefore, the input voltage Vi may be affected by the voltage fluctuation. The voltage determination unit 17c may take in the detection voltage Vp a plurality of times and determine the magnitude of the input voltage Vi when the plurality of detection voltages Vp are all the same value. For example, the voltage determination unit 17c may capture the A / D conversion value of the detected voltage Vp three times, and when the same capture value is obtained three times in a row, the voltage determination unit 17c may determine the voltage using the capture value. From the above, it is possible to suppress the influence of voltage fluctuation and determine the input voltage Vi more accurately.

After the determination of the input voltage Vi, the control circuit 17 shifts to the notification operation shown in step S7. In the notification operation, the voltage determination unit 17c controls the lighting circuit 15 according to the determination result, and changes the lighting state of the light source 4. First, the voltage determination unit 17c outputs a dimming pattern according to the determination result to the dimming signal output unit 17b. The dimming signal output unit 17b outputs a dimming signal Vu that lights the light source 4 in a lighting pattern different from the normal lighting according to the dimming pattern.

An example of a lighting pattern different from normal lighting will be described. When the input voltage Vi is determined to be AC100V, the control circuit 17 outputs a dimming signal Vu so that the light source 4 blinks. Further, when the input voltage Vi is determined to be AC200V, the control circuit 17 outputs a dimming signal Vu so that the light source 4 is lit at the lower limit. Here, the lower limit lighting is a lighting state in which the dimming rate is lower than that of normal lighting. When the input voltage Vi is determined to be another voltage, the control circuit 17 outputs a dimming signal Vu so that the light source 4 is turned off. Table 1 shows the lighting patterns of the above notification operations.

From the above, the light source 4 is turned on in a lighting state different from the normal by the notification operation. As a result, the operator can easily grasp the input voltage Vi. Further, the operator can know the input voltage Vi by using the function of the installed lighting fixture 1. Therefore, it is possible to easily confirm the presence or absence of wiring abnormality after construction without using a measuring device such as a tester.

Here, it is assumed that the power line on the Lb side touches the metal portion of the outer shell of the luminaire 1. In this case, the power line may be in a ground fault state. At this time, even if it is assumed that AC200V is connected to the input terminal 3, the voltage input to the lighting device 10 is AC100V. As described above, the lighting device 10 is lit even at AC100V. Therefore, if the circuit breaker in the premises of the building where the lighting fixture 1 is installed does not fall due to a ground fault, the worker may not notice the abnormal state.

Similarly, even when AC100V is input to the lighting device 10 due to a wiring error, it is difficult to notice the wiring error only by the normal lighting test of the light source 4. Since the outer shell of the lighting fixture 1 is grounded, it is possible to prevent electric shock or the like even if an operator comes into contact with the outer shell of the lighting fixture 1. However, the lighting fixture 1 is in a state different from the usage state intended by the user. Therefore, there is a possibility that the lighting fixture 1 or the external wiring may have a problem.

On the other hand, in the luminaire 1 of the present embodiment, the input voltage Vi is determined by the pullless operation of the switch SW2. The operator can easily confirm the input voltage Vi by the lighting pattern according to the determination result.

If the determination result is different from the intended voltage, the operator confirms the wiring state by, for example, the following procedure. First, the line voltage between the high potential side terminal 3a and the low potential side terminal 3b is measured. Not limited to this, the line voltage of the input terminal 13 may be measured. When the measured line voltage is different from the intended input voltage Vi, the voltage of the wiring between the switch SW2 and the input terminal 3 and the line voltage of the switch SW2 are measured. Next, the breaker of the external power supply is cut off, and the ground connection of the luminaire 1 and the ground connection of the neutral point N are confirmed.

Further, after the above wiring confirmation is completed, the input voltage Vi determination function becomes unnecessary. Therefore, after confirming the input voltage Vi, the pullless operation by the switch SW2 may be assigned to another function. As another function, for example, the dimming rate of the light source 4 may be changed to a predetermined dimming rate by a pullless operation.

As a method of assigning the pullless operation to another function, the lighting device 10 may be provided with an invalid switch SW3 that invalidates the pullless operation for the determination of the magnitude of the input voltage Vi by the control circuit 17 and the output of the determination result. .. The invalid switch SW3 may be, for example, a jumper switch. In this case, the pullless operation can be assigned to another function by inserting the jumper pin into the jumper switch. Not limited to this, a special operation or the like for complicatedly connecting / disconnecting the power supply may be used.

By assigning the pullless operation to another function, it is possible to prevent the occurrence of the notification operation even if the user unintentionally performs the pullless operation. Therefore, it is possible to prevent the user from falling into an unintended lighting state.

The worker of this embodiment includes anyone who performs a pullless operation. For example, the worker may be a worker who installs the lighting fixture 1, a user of the lighting fixture 1, or a user of a building to which the lighting fixture 1 is attached.

Further, in the present embodiment, the mode switching unit 17a, the dimming signal output unit 17b, and the voltage determination unit 17c are separately provided in the control circuit 17. Not limited to this, the mode switching unit 17a, the dimming signal output unit 17b, and the voltage determination unit 17c may be integrated. As the control circuit 17, any circuit that determines the magnitude of the input voltage Vi from the detection voltage Vp of the voltage detection circuit 12 according to the signal from the external device and outputs the determination result to the notification unit can be adopted.

The control circuit 17 may be dedicated hardware or a CPU (Central Processing Unit) that executes a program stored in the memory. The CPU is also called a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a processor, or a DSP.

When the control circuit 17 is dedicated hardware, the control circuit 17 may be, for example, a single circuit, a composite circuit, a programmed processor, or a parallel programmed processor. Further, the control circuit 17 may be an ASIC (Application Specific Integrated Circuit) or an FPGA (Field-Programmable Gate Array). Further, the control circuit 17 may be a combination of these. The functions of the mode switching unit 17a, the dimming signal output unit 17b, and the voltage determination unit 17c may be realized by the control circuit. Further, the functions of each part may be collectively realized by the control circuit 17.

When the control circuit 17 is a CPU, the functions of the mode switching unit 17a, the dimming signal output unit 17b, and the voltage determination unit 17c are realized by software, firmware, or a combination of software and firmware. Software and firmware are written as programs and stored in memory. The control circuit 17 realizes the functions of each part by reading and executing the program stored in the memory.

That is, the control circuit 17 is a memory for storing a program that determines the magnitude of the input voltage Vi from the detection voltage Vp of the voltage detection circuit 12 according to the signal from the external device and outputs the determination result to the notification unit. To prepare for. Further, it can be said that these programs cause the computer to execute the procedure or method of the mode switching unit 17a, the dimming signal output unit 17b, and the voltage determination unit 17c.

Here, the memory corresponds to, for example, a non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD, or the like. RAM is an abbreviation for Random Access Memory. ROM is an abbreviation for Read Only Memory. EPROM is an abbreviation for Erasable Programmable Read Only Memory. EEPROM is an abbreviation for Electrically Erasable Programmable Read-Only Memory.

It should be noted that some of the functions of the mode switching unit 17a, the dimming signal output unit 17b, and the voltage determination unit 17c may be realized by dedicated hardware, and some may be realized by software or firmware. For example, for the mode switching unit 17a and the voltage determination unit 17c, the function is realized by the control circuit 17 as dedicated hardware, and for the dimming signal output unit 17b, the control circuit 17 reads out the program stored in the memory. It is possible to realize the function by executing it.

As described above, the control circuit 17 can realize each of the above-mentioned functions by hardware, software, firmware, or a combination thereof.

Further, in the present embodiment, the notification unit is the light source 4, but the notification unit may be other than this as long as the determination result can be notified to the operator.

Further, in the present embodiment, the external power supply is assumed to be a single-phase three-wire power supply. Not limited to this, the present embodiment can be applied as long as the external power supply is a power supply that supplies voltages of a plurality of magnitudes. Further, even if the external power supply is a power supply that supplies a voltage of one magnitude, the present embodiment can be applied for checking wiring abnormalities and the like.

Further, in the pullless operation of the present embodiment, the switch SW2 is operated to be turned on, off, and turned on within 3 seconds. Not limited to this, the pullless operation may be any operation as long as the switch SW2 is turned on or off a plurality of times within a certain period.

These modifications can be appropriately applied to the lighting device and the luminaire according to the following embodiments. Since the lighting device and the lighting fixture according to the following embodiments have much in common with the first embodiment, the differences from the first embodiment will be mainly described.

Embodiment 2.
FIG. 6 is a circuit block diagram of the lighting fixture 201 according to the second embodiment. The luminaire 201 of the present embodiment includes a lighting device 210. The lighting device 210 includes an expansion terminal 218 for connecting an external device. Further, the lighting device 210 includes a control circuit 217. The control circuit 217 further includes a mode switching unit 217d in addition to the configuration of the first embodiment. Other configurations are the same as those in the first embodiment.

In the present embodiment, the external device is the confirmation unit 219. The confirmation unit 219 communicates with the control circuit 217 via the expansion terminal 218. Further, in the present embodiment, the notification unit is a confirmation unit 219. The confirmation unit 219 includes a display unit that displays the input voltage Vi. The display unit is composed of LEDs and the like.

The expansion terminal 218 is a terminal for connecting a retrofit expansion unit. With the expansion unit, optional functions such as dimming control and wireless control can be added to the lighting fixture 1. In the present embodiment, the input voltage Vi is determined by connecting the confirmation unit 219 to the expansion terminal 218.

The expansion terminal 218 is connected to the mode switching unit 217d of the control circuit 17. The mode switching unit 217d is a communication unit that communicates with a device connected to the expansion terminal 218. The mode switching unit 217d is, for example, a serial interface. The mode switching unit 217d includes at least two communication lines connected to the expansion terminal 218. The two communication lines are a serial data transmission line and a serial data reception line. The mode switching unit 217d performs serial communication with the expansion unit connected to the outside of the lighting device 10 via the expansion terminal 18.

The mode switching unit 217d determines whether or not the confirmation unit 219 is connected to the expansion terminal 218 by a method described later. When the mode switching unit 217d determines that the confirmation unit 219 is connected to the expansion terminal 218, the mode switching unit 217d sets the state of the control circuit 217 to the voltage determination mode. The voltage determination unit 17c determines the magnitude of the input voltage Vi from the detection voltage Vp of the voltage detection circuit 12 in the voltage determination mode. The voltage determination unit 17c outputs the determination result to the confirmation unit 219 via the expansion terminal 218. The confirmation unit 219 displays the determination result.

Next, the operation of the lighting fixture 201 of the present embodiment will be described. FIG. 7 is a flowchart showing the operation of the control circuit 217 according to the second embodiment. When the switch SW2 is turned on, AC200V is supplied to the luminaire 1. When the control power supply Vdd is energized to the control circuit 217, the control circuit 217 is initialized as shown in step S1.

Next, as shown in step S208, the mode switching unit 217d detects the presence / absence of the connection of the confirmation unit 219. For example, by detecting that the communication line of the mode switching unit 217d is pulled up, the control circuit 217 determines that some expansion unit is connected to the expansion terminal 18. The mode switching unit 217d serially communicates with the expansion unit connected to the expansion terminal 218. By this serial communication, the mode switching unit 217d determines that the expansion unit connected to the expansion terminal 218 is the confirmation unit 219. From the above, the presence or absence of the confirmation unit 219 can be detected.

When the confirmation unit 219 is connected, the control circuit 217 shifts to the voltage determination mode as shown in step S5. Step S5 and step S6 are the same as those in the first embodiment.

The determination result of the input voltage Vi is transmitted from the voltage determination unit 17c to the confirmation unit 219 via the mode switching unit 217d by serial communication. As shown in step S209, the confirmation unit 19 notifies the received determination result by the unit notification operation described later.

Next, it is assumed that the operator removes the confirmation unit 219 without turning off the external power supply after the wiring confirmation by the operator is completed. At this time, the operation of step S208 switches the control circuit 217 to the steady operation mode shown in step S2. As a result, as shown in step S3, the lighting device 210 normally lights the light source 4. After the initialization in step S1, the same operation is performed even when the confirmation unit is not attached.

Next, the unit notification operation will be described. The confirmation unit 219 displays the input voltage Vi on the display unit. As a result, the operator can easily grasp the input voltage Vi. Further, even when the light source 4 is not attached to the lighting device 210, the operator can know the input voltage Vi of the lighting device 210. Further, the confirmation unit 219 is removed during normal use of the lighting fixture 201. Therefore, it is possible to prevent switching to the voltage determination mode against the intention of the user.

The display unit of the confirmation unit 19 may be composed of a 7-segment LED or an LED matrix panel. As a result, it is possible to notify a detailed voltage determination result rather than the notification by the three types of lighting patterns of the first embodiment. Further, a message prompting the confirmation of the wiring connection and a specific confirmation method may be displayed on the display unit. This allows the operator to quickly check the wiring without referring to the manual.

In the first embodiment and the present embodiment, the operator is notified of the input voltage Vi by the change of the light of the notification unit. As an example of this modification, the confirmation unit 219 may notify the determination result by voice. In this case, the confirmation unit 219 has a built-in speaker. As a result, the operator can know the input voltage Vi without gazing at the light source 4 or the confirmation unit 219.

Further, the confirmation unit 219 may include a voice synthesis IC. The confirmation unit 219 may notify a message prompting confirmation of the wiring connection and a specific confirmation method together with the determination result by voice. As a result, it is possible to prompt the operator to confirm the wiring promptly.

In the present embodiment, the transition to the voltage determination mode is performed by connecting the confirmation unit 219 to the expansion terminal 218. Not limited to this, for example, the voltage determination mode may be entered by turning on the switch SW2 while pressing the push button switch provided on the lighting device 10. In this case as well, it is possible to prevent the voltage determination mode from being unintentionally switched due to an erroneous operation by the user.

Further, in the present embodiment, the control circuit 217 includes both a mode switching unit 17a and a mode switching unit 217d. Therefore, the voltage determination by the pullless operation and the voltage determination by the confirmation unit 219 can be used together. Not limited to this, the mode switching unit 17a may not be provided in the present embodiment.

Further, in FIG. 6, the voltage determination unit 17c and the mode switching unit 217d transmit and receive signals via the dimming signal output unit 17b. Not limited to this, the voltage determination unit 17c and the mode switching unit 217d may directly transmit and receive signals.

The technical features described in each embodiment may be used in combination as appropriate.

1,201 lighting equipment, 10,210 lighting device, 4 light source, 12 voltage detection circuit, 15 lighting circuit, 17,217 control circuit, 17a, 217d mode switching unit, 17c voltage judgment unit, 218 expansion terminal, 219 confirmation unit , AC power supply, SW2 switch, SW3 invalid switch, Vi input voltage, Vp detection voltage

Claims (13)

A lighting circuit that lights up a light source by supplying an input voltage from an external power supply that is a commercial AC power supply .
The control circuit that controls the lighting circuit and
A voltage detection circuit that detects the input voltage and
Equipped with
The control circuit determines the magnitude of the input voltage from the detection voltage of the voltage detection circuit in response to a signal from an external device, and outputs the determination result to the notification unit .
The external power supply supplies a first voltage and a second voltage,
The control circuit is a lighting device, characterized in that it determines which of the first voltage, the second voltage, the first voltage, and the voltage other than the second voltage is the input voltage. .. The lighting device according to claim 1 , wherein the lighting circuit lights the light source regardless of whether the input voltage is the first voltage or the second voltage. The control circuit is
A mode switching unit that switches the state of the control circuit between the steady operation mode and the voltage determination mode in response to a signal from the external device.
When the control circuit is in the voltage determination mode, a voltage determination unit that determines the magnitude of the input voltage from the detection voltage of the voltage detection circuit and outputs the determination result to the notification unit.
The lighting device according to claim 1 or 2 , wherein the lighting device comprises. 3. The mode switching unit is characterized in that the voltage determination unit is stopped when the control circuit is in the steady operation mode, and the voltage determination unit is activated when the control circuit is in the voltage determination mode. The lighting device described. A lighting circuit that turns on the light source by supplying input voltage from an external power supply,
The control circuit that controls the lighting circuit and
A voltage detection circuit that detects the input voltage and
Equipped with
The control circuit determines the magnitude of the input voltage from the detection voltage of the voltage detection circuit in response to a signal from an external device, and outputs the determination result to the notification unit.
The external device is a switch that connects the external power supply and the lighting circuit.
The control circuit detects the interruption of the input voltage by the pullless operation of turning the switch on and off within a certain period from the detected voltage of the voltage detection circuit, and when the pullless operation is detected, the magnitude of the input voltage is determined. A lighting device characterized in that a determination is made and the determination result is output to the notification unit. The lighting device according to claim 5 , further comprising an invalid switch that invalidates the pullless operation with respect to the determination of the magnitude of the input voltage by the control circuit and the output of the determination result. The notification unit includes the light source.
The lighting device according to any one of claims 1 to 6 , wherein the control circuit controls the lighting circuit according to the determination result and changes the lighting state of the light source. A lighting circuit that turns on the light source by supplying input voltage from an external power supply,
The control circuit that controls the lighting circuit and
A voltage detection circuit that detects the input voltage and
Expansion terminals for connecting external devices and
Equipped with
The control circuit determines the magnitude of the input voltage from the detection voltage of the voltage detection circuit in response to a signal from the external device, and outputs the determination result to the notification unit.
The external device is a confirmation unit that communicates with the control circuit via the expansion terminal.
The control circuit determines whether or not the confirmation unit is connected to the expansion terminal, and when the confirmation unit is connected to the expansion terminal, determines the magnitude of the input voltage and obtains the determination result. A lighting device characterized by outputting to the notification unit. The lighting device according to claim 8 , wherein the notification unit includes the confirmation unit. The lighting device according to claim 9 , wherein the confirmation unit displays the determination result. The lighting device according to claim 9 , wherein the confirmation unit notifies the determination result by voice. The control circuit takes in the detection voltage of the voltage detection circuit a plurality of times, and determines the magnitude of the input voltage when the plurality of detection voltages are all the same value. 1 The lighting device according to any one of 1. A lighting fixture comprising the lighting device according to any one of claims 1 to 12 and the light source.

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